Locking device for use in punching-machines or the like.



No. 703,747. Patantod- July I, I902.

E. B. STIMPSON.

LOCKING DEVICE FOR USE IN PUNCHING MACHINES OR THE LIKE.

(Applicatiun filed Jan. 14, 1902.)

(No Model.) 2 Sheets-Sheet I.

1 1% Wil -.1 Uh- WITNESSES: INVENTOR 7 m" f .1 6

Qua. v. BY 5 ATTORNEY No. 703,747. Patented July I, I902.

E. B. STIMPSON. LOCKING DEVICE FOR USE IN PUNGI'IING MACHINES OR THE LIKE.

(Application flled Jan. 14, 1902.

2 Sheets-Sheet 2.

(In IodeI.)

IIIIVENTOR WITNESSES:

ATTORNEY THE mums r:r:n s co. PHOTO-LITHQ, wasumu'mm o. c.

Farce.

EDWIN BFSTIMPSON, OF BROOKLYN, NEW YORK.

LOCKING DEVICE FOR USE IN PUNCHlNG-MACHINES OR THE LIKE.

SPEGIFIGATION forming part of Letters Patent No. 7 3,747, dated July l, 1902.

Application filed January 14, 1902. Serial ll'o. 89.734 (No model.)

To all whom it may concern.

Be it known that I, EDWIN B. STIMPSON, a citizen of the United States, residing in the borough of Brooklyn, county of Kings, and city and State of New York, have invented certain Improvements in Locking Devices for Use in Punching-Machines or the Like, of

which the following is a specification.

This invention is especially well adapted to a gang punching-machine of the kind illust-rated in my Un'ited'States Patent No. 665,702, of January 8, 1901; and it has been found convenient to illustrate the invention in connection with such a machine, although its application and use is not necessarilylimited to a punching-machine of this character, but may be employed in many cases where a shiftable part is to be secured in place after adjustment. It may be stated here briefly that in my said patent a multiple or gang punching-machine is described which has a plurality of punching devices arranged abreast and capable of being spaced and locked in position after adjustment by means fully described therein,'the parts includedin each set being locked simultaneously.

In the present case the inventionresides'in the means for locking independently each element of the punching devices, whereby the construction of. the machine is much simplified and cheapened.

In the accompanying drawings, Figure 1 is a front elevation of the'macliine', and Fig. 2 is a Vertical-section of the same at the line :0 in Fig. 1. Fig. 3 is an end view of one of the dies or die-blocks detached; and Fig. 4is a section of same in siiu at line 00 in Fig. 3. Fig. 5 is a sectional view at line in Fig. 6, showing the locking device for the punchguide; and Fig. 6 is a section atright angles to that of Fig. 5. In these last two views the locking-jaw and screw are seen in elevation.

1 designates the main frame, 2 the bed or table thereon, and 3 an upright'frame on the bed upon which slides the head 4, which carries the punches. This head is coupled by links 5 to the straps of' eccentrics 6'0n the driving-shaft 7, mounted in the frame below.

8 is the driving-pulley, adapted to be connected by a clutch device 9 to the shaft 7 for driving, and 10 is a treadle by which the 2 therein.

operator sets the punching-machine in oper: ation.

1 Mounted on the head 4, so as to be slidable therealong transversely of the machine for spacing and also from front to rear for convenience in placingand removingthe punches 11, arerpunch holders or. carriers .12, and mounted slidably on a fixed bar 13 on thetable or bed 2 are punch-guides 14,.movable along the bar 13 for spacing. to correspond with the punches. In a slotted member or portion 2 of the bed 2 are mounted-slidably the die-blocks 15. The die-block may have the die formed in it,or a die 16 may be set therein, as shown in Fig. 4. This matter of the separate construction of the die. isnot The die-block 15 rests in the slot in the member 2 and is supported onshoulders at It is a loose fit in the slot, so that when unclamped or unlocked it may be moved freely along the slot." In order to lock or secure the die-block in position in the slot when properly adjusted or set, it is provided with a locking-jaw 17 in the hature of a plate, which fits in a gain in the end of the block and has a stem 18, guided in a bore in the drive outward the jaw 17 and cause it to press against the wall of thelretaining-slot, as seen in Fig. 4. This practically lengthens the block and locks it securely in the position to which it may have been adjusted. By withdrawing the screw 20 the block is freed and may be shifted along the slot at will.

, inclination or bevel to fit to the surface it is means of securing the parts permits of this.

to bear on. Itwill be noted that this means for locking the part is confined to the individual part,and thus either set maybe shifted and locked or secured while the other sets are still free, and this is an important advantage in preparing the machine for punching; or it may be, for example, desirable to adjust or shift but one set of the punching devicesthat is, a holder 12, a guide 14, and a dieblock leaving the other sets fast, and this The punch-holder 12 need not be secured.

It should be understood that in a gang punching-machine of this character there is a plurality of punching devices, eachdevice comprising a set of parts or elements namely, a punch-holder, a punch-guide, and a die-block. All of the sets are alike, and all of the corresponding elements of the sets are alike in substance-that is, all the holders are alike, all the guides are alike, and all the die-blocks are alike. The latter are alined by being pressed in looking or clamping up to the front wall of the slot in the table or bed.

It will be noted that with the construction shown the jaw or plate 17 is moved in a direction at right angles to the direction in which the pressure is applied in driving the screw 20. This enables the screw to be reached with facility as the upper surface of the die-block isexposed. The jaw or plate 17 may have any suitable contour.

, It will be understood that the device above is not a means for permanently securing a part to another in the manner of drawboring to secure a tenon in a mortise nor as a means for operating a wedge. It comprises, essentially, a guided stem provided with a clamping jaw or head, the face of which-is disposed at right angles to the line of movement in clamping or applied directly by the pressure. The function of the screw is merely to transform the applied pressure at right angles, so-

as to facilitate access to the screw. The locking device is mounted in the movable part or element to be locked, so that this part can be secured at any point to which it may be shifted or adjusted.

Having thus described my invention, I

ing device to secure it in place on the machine, said locking device comprising a jawhaving a stem provided with a bearing in the element, and a screw driven into said element in a direction transversely to the axis of said stem, the said stem having on it a shoulder in position to be impinged upon by the conical tip of said screw-for moving the stem longitudinally, the clamping-face of the jaw beingon the side of the same opposite to the stem thereof, substantially as set forth.

2. In a machine of the character described havinga support for the same, 'a movable part or element to be secured in place on saidsupport, said element having mounted in it a looking device to secure it in place on the ma- "chine, such locking device comprising a jaw in the nature of a plate which normally occupies a recess in the surface of the element, a stem on said jaw which extends into the body of the element, and which is provided with an inclined shoulder, and a cone-pointed screw which screws into said element in position to apply the conicalsurface of its point. to the inclined shoulder on the stem to drive the jaw out from its recess, substantially as and for the purpose set forth. 3. The combination with a machine-be having in it a slot and suitable supportingshoulders, and a die-block supported on said shoulders and movable along said slot between the walls of the same, of a locking device carried by said block for looking it in position inthe slot when adjusted, said locking'device comprising a clamping-jaw'l7, occupying arecess in the end of the die-block adjacent to the side wall of the slot in the bed, the shank 18, of said jaw, which shank extends into the block and has on it a shoulder, and the conepointed screw 20, driven in the block transversely to the axis of said stem and in position to bear on the shoulder on the latter and thus drive the jaw forcibly outward and against the side Wall of the containing-slot in the machine-bed, substantially as set forth. In Witness whereof I have hereunto signed my name, this 7th day of January, 1902, in the presence of two subscribing witnesses.

, EDWIN B. STIMPSON.

\Vitnesses:

I-IENRY CONNETT, PETER A. Ross.

IIO 

